I am unable to follow what has been tested and tried. First, try to build the HelloWorld.mxml in examples/mxroyale (not the one in examples/royale). If that doesn't build then we need to verify your settings. Put all of the console output (if you can get some from VSCode) into pastebin and post the link.
If that builds, but adding the mx:HTTPService tag doesn't then verify that your MXRoyaleJS.swc contains HTTPService. A swc is a ZIP file. Unzip it and see if an HTTPService.js file is in there. HTH, -Alex On 4/17/19, 6:25 PM, "choirul anam" <ichsan.a...@gmail.com> wrote: Hi, I Already add these lines to asconfig.json: "library-path": [ "${royalelib}/js/libs/MXRoyaleJS.swc" ], "js-library-path": [ "${royalelib}/js/libs/MXRoyaleJS.swc" ], But still get the same message: Error: This tag could not be resolved to an ActionScript class. It will be ignored. -- Sent from: https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fapache-royale-users.20374.n8.nabble.com%2F&data=02%7C01%7Caharui%40adobe.com%7C4f56b3a37f0745f71f8a08d6c39ccdfc%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C1%7C636911475569685639&sdata=9yEo9FZ1MfVc6Vo%2FBNWHZA36bJ1f3DipjyaKpla6SeM%3D&reserved=0